12 Days of Christmas
399
99 Bottles of Beer
384
Abundant Numbers
708
Christmas Trees
647
Collatz
753
Divisors
932
Emirp Numbers
478
Evil Numbers
853
Fibonacci
934
Fizz Buzz
922
Foo Fizz Buzz Bar
747
Happy Numbers
535
Leap Years
784
Niven Numbers
899
Odious Numbers
851
Pernicious Numbers
710
Prime Numbers
622
Quine
945
π
85
𝑒
70